Other Assets - Schedule of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred financing costs	$ 521	$ 714
Deposits	309	318
Prepaid royalty	140	140
Other assets	153	134
Total other assets	$ 1,123	$ 1,306